import java.io.File;
import java.util.StringTokenizer;
import java.util.regex.Pattern;
import java.util.regex.*;

public class Test {
	public static void main(String[] args)
	{
		StringTokenizer tokens=new StringTokenizer("GET//jfdsfksjfdfjdk","//");
		System.out.println(tokens.nextToken());
		//System.out.println(tokens.nextToken());
		//System.out.println(tokens.nextToken());
		Pattern p=Pattern.compile("");
		String str="123456789";
		System.out.println("str.lastIndexOf(str,2)"+str.lastIndexOf(str,2));
		System.out.println(str.indexOf(str, 6));
		System.out.println(str.substring(1,5));
		System.out.println("File.pathSeparator="+File.pathSeparator);
		System.out.println("File.separator="+File.separator);
		System.out.println("File.pathSeparatorChar="+File.pathSeparatorChar);
		System.out.println("File.separatorChar="+File.separatorChar);
	    String filepath="GET/jfdsfks/jfdfjdk";
	    System.out.println(filepath.replaceAll("/",Matcher.quoteReplacement(File.separator)));
		System.out.println(str.charAt(0));
		//p=Pattern.compile(" {0,}+[\\]{1,2} {0,}+");
		p=Pattern.compile("[ ]{0,}+/");
		Matcher m=p.matcher("  /");
		System.out.print(m.matches());
		
		
		
	}


}